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From: cinap_lenrek@felloff.net
To: 9fans@9fans.net
Subject: Re: [9fans] store NaN() to memory traps on 386 (387)
Date: Mon,  2 May 2016 21:49:06 +0200	[thread overview]
Message-ID: <5d7fd86629dd2404be0d9b93d0e0333c@felloff.net> (raw)
In-Reply-To: <ffae0e971d8c0fec19403a3ed25932ca@lilly.quanstro.net>

>> cpu% seq nan
>> seq 11791387: suicide: sys: fp: invalid operation fppc=0x2635 status=0x8081 pc=0x0000122

> that seems reasonable to me.  what could seq possibly do with nan?

thats the thing. its not expecting nan. and having the process trap
for this input seems rather drastic. imagine we'd make atoi() abort()
when the input isnt a valid integer and demand that every caller
of atoi() checks beforehand if the input string is a decimal number.
writing that check in case for real numbers is even more complicated
than writing a test for decimal integers.

--
cinap



      parent reply	other threads:[~2016-05-02 19:49 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-30 12:40 cinap_lenrek
2016-04-30 23:47 ` cinap_lenrek
2016-05-02 10:16 ` erik quanstrom
2016-05-02 16:36   ` cinap_lenrek
2016-05-02 16:45     ` erik quanstrom
2016-05-02 19:05       ` cinap_lenrek
2016-05-02 19:17         ` erik quanstrom
2016-05-02 19:27           ` Ryan Gonzalez
2016-05-02 23:23             ` erik quanstrom
2016-05-03  1:13               ` cinap_lenrek
2016-05-02 19:49           ` cinap_lenrek [this message]

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